COMPRESSORS, GAS TURBINES AND JET ENGINES QUIZ

None of these

Surrounding air

Its own oxygen

Compressed atmospheric air

Back pressure

Critical pressure

Discharge pressure

None of the listed here

Constant pressure

Constant volume

None of the listed here

Constant temperature

Six times

Double

Equal to

Three times

Low

High

Low/high depending on make and type

Same

May increase or decrease depending on compressor capacity

Decreases

Increases

Remain unaffected

All of the listed here

Inlet losses

Impeller channel losses

Diffuser losses

Pressure ratio alone

Maximum cycle temperature alone

Both pressure ratio and maximum cycle temperature

Minimum cycle temperature alone

D₁/D₂ = (p₁/p₃)1/4

D₁/D₂ = (p₁ p₃)1/2

D₁/D₂ = (p₃/p₁)1/4

D₁/D₂ = (p₁ p₃)1/4

It results in minimum work

It greatly affects volumetric efficiency

It allows maximum compression to be achieved

It permits isothermal compression